/Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/SkeletalMeshModifiers/Public/SkinWeightModifier.h
Actually applies the weight modifications to the skeletal mesh. This action creates an undo transaction. The skeletal mesh asset will be dirtied, but it is up to the user to save the asset if required.
true if weights were applied to a skeletal mesh, false otherwise
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Mesh") bool CommitWeightsToSkeletalMesh()